gecko-dev/toolkit/content/globalOverlay.js

102 строки
2.7 KiB
JavaScript

/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
function closeWindow(aClose, aPromptFunction) {
let { AppConstants } = ChromeUtils.import("resource://gre/modules/AppConstants.jsm", {});
// Closing the last window doesn't quit the application on OS X.
if (AppConstants.platform != "macosx") {
var windowCount = 0;
var e = Services.wm.getEnumerator(null);
while (e.hasMoreElements()) {
var w = e.getNext();
if (w.closed) {
continue;
}
if (++windowCount == 2)
break;
}
// If we're down to the last window and someone tries to shut down, check to make sure we can!
if (windowCount == 1 && !canQuitApplication("lastwindow"))
return false;
if (windowCount != 1 && typeof(aPromptFunction) == "function" && !aPromptFunction())
return false;
} else if (typeof(aPromptFunction) == "function" && !aPromptFunction()) {
return false;
}
if (aClose) {
window.close();
return window.closed;
}
return true;
}
function canQuitApplication(aData) {
try {
var cancelQuit = Cc["@mozilla.org/supports-PRBool;1"]
.createInstance(Ci.nsISupportsPRBool);
Services.obs.notifyObservers(cancelQuit, "quit-application-requested", aData || null);
// Something aborted the quit process.
if (cancelQuit.data)
return false;
} catch (ex) { }
return true;
}
function goQuitApplication() {
if (!canQuitApplication())
return false;
Services.startup.quit(Ci.nsIAppStartup.eAttemptQuit);
return true;
}
//
// Command Updater functions
//
function goUpdateCommand(aCommand) {
try {
var controller = top.document.commandDispatcher
.getControllerForCommand(aCommand);
var enabled = false;
if (controller)
enabled = controller.isCommandEnabled(aCommand);
goSetCommandEnabled(aCommand, enabled);
} catch (e) {
Cu.reportError("An error occurred updating the " +
aCommand + " command: " + e);
}
}
function goDoCommand(aCommand) {
try {
var controller = top.document.commandDispatcher
.getControllerForCommand(aCommand);
if (controller && controller.isCommandEnabled(aCommand))
controller.doCommand(aCommand);
} catch (e) {
Cu.reportError("An error occurred executing the " +
aCommand + " command: " + e);
}
}
function goSetCommandEnabled(aID, aEnabled) {
var node = document.getElementById(aID);
if (node) {
if (aEnabled)
node.removeAttribute("disabled");
else
node.setAttribute("disabled", "true");
}
}